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author：

Wang, Y. (Wang, Y..) [1] | Xiao, Y. (Xiao, Y..) [2] | Wang, L. (Wang, L..) [3] | Su, Z. (Su, Z..) [4] | Xu, Y. (Xu, Y..) [5] | Fan, L. (Fan, L..) [6] | Yao, G. (Yao, G..) [7] | Qian, X. (Qian, X..) [8] | Lin, J.-Y. (Lin, J.-Y..) [9]

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Scopus

Abstract：

The　efficiency　and　stability　of　perovskite　solar　cells　(PSCs)　can　be　greatly　affected　by　various　factors　such　as　passivating　the　perovskite　film,　oxidizing　the　hole-transport　material　of　2,2′,7,7′-tetras(N,N-p-methoxyaniline)-9,9′-spirodifluorene　(Spiro-OMeTAD),　and　inhibiting　the　iodide　migration.　Here　we　introduce　a　multifunctional　starch-iodine　complex　in　the　perovskite　film　to　enhance　the　fill　factor　and　stability　of　PSCs.　Results　demonstrate　that　the　starch-iodine　complex　from　the　perovskite　film　can　release　iodine　molecules　to　gently　oxidize　the　Spiro-OMeTAD,　which　can　significantly　increase　the　PSC＇s　fill　factor.　Moreover,　the　remaining　starch　can　effectively　passivate　the　perovskite　film　to　obviously　improve　the　PSC＇s　long-term　stability.　Furthermore,　the　starch-iodine　complex　can　absorb　and　store　the　iodide　ions　to　generate　a　starch-triiodide　complex,　which　can　release　iodide　ions　to　promote　iodide　defect　self-healing　and　suppress　iodide　migration　in　the　perovskite　films,　resulting　in　a　further　enhancement　of　the　PSC＇s　long-term　stability.　As　a　result,　the　PSC　based　on　the　starch-iodine　complex　obtains　a　superior　cell　efficiency　of　22.60%　with　a　high　fill　factor　of　79.54%,　and　keeps　91.12%　of　its　original　efficiency　after　1500　h.　©　2024　Elsevier　B.V.

Keyword：

Iodide management Mild oxidation Passivation Perovskite solar cell Starch-iodine complex

Community：

  • [ 1 ] [Wang Y.]College of Chemical Engineering, Fuzhou University, Fuzhou, 350116, China
  • [ 2 ] [Wang Y.]College of Chemical Engineering and Material, Quanzhou Normal University, Quanzhou, 362000, China
  • [ 3 ] [Xiao Y.]College of Chemical Engineering, Fuzhou University, Fuzhou, 350116, China
  • [ 4 ] [Xiao Y.]College of Chemical Engineering and Material, Quanzhou Normal University, Quanzhou, 362000, China
  • [ 5 ] [Wang L.]College of Chemical Engineering and Material, Quanzhou Normal University, Quanzhou, 362000, China
  • [ 6 ] [Su Z.]College of Physics and Information Engineering, Quanzhou Normal University, Quanzhou, 362000, China
  • [ 7 ] [Xu Y.]College of Chemical Engineering and Material, Quanzhou Normal University, Quanzhou, 362000, China
  • [ 8 ] [Fan L.]College of Chemical Engineering and Material, Quanzhou Normal University, Quanzhou, 362000, China
  • [ 9 ] [Yao G.]College of Physics and Information Engineering, Quanzhou Normal University, Quanzhou, 362000, China
  • [ 10 ] [Qian X.]College of Chemical Engineering, Fuzhou University, Fuzhou, 350116, China
  • [ 11 ] [Lin J.-Y.]Department of Chemical and Materials Engineering, Tunghai University, Taichung City, 407224, Taiwan

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Source ：

Journal of Power Sources

ISSN： 0378-7753

Year： 2024

Volume： 602

8 . 1 0 0

JCR@2023

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ESI Highly Cited Papers on the List： 0 Unfold All

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30 Days PV： 2

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